Patents by Inventor Ivanka Milcheva

Ivanka Milcheva has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • METHOD AND SYSTEM OF OPERATING A HIGH-TEMPERATURE FUEL CELL
    Publication number: 20080318091
    Abstract: The invention relates to a method and to a system of operating a high-temperature fuel cell. At least one fuel cell, a reformer, an afterburner and a heat exchanger are present in the system. The total efficiency should be increased with the invention in accordance with the object set. In accordance with the invention, for this purpose, fresh air supplied to the fuel cell(s) at the cathode side is preheated in multiple stages by heat from the afterburning and from the heated air dissipated from the fuel cell(s) at the cathode side by means of a high-temperature heat exchanger.
    Type: Application
    Filed: July 17, 2008
    Publication date: December 25, 2008
    Inventors: Mihails Kusnezoff, Wieland Beckert, Ivanka Milcheva, Michael Stelter, Ulf Waeschke